RockteMQ-AI commented on issue #10511: URL: https://github.com/apache/rocketmq/issues/10511#issuecomment-4711383862
**Issue Evaluation** Category: `type/enhancement` | Status: **Evaluated** Replacing `Enum.values()` loop with static `BY_CODE[]` array lookup for `LanguageCode` and `SerializeType`. **Assessment:** Valid optimization. `Enum.values()` returns a defensive copy on every call (JDK spec), so `valueOf(byte)` on the hot RPC decode path allocates a new array each time. Static array lookup is O(1) with zero allocation. This follows the same pattern already merged in PR #10469 for `MessageVersion.valueOfMagicCode()`. **Feasibility:** Feasible. Simple, well-defined change. **Scope:** remoting/common module **Compatibility:** No breaking changes. The null return for unknown codes should be handled by callers (verify existing error handling). --- *Automated evaluation by RockteMQ-AI* -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
